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ODA Schema questions about dataTypeMapping [message #30526]

Fri, 22 April 2005 15:10

Eclipse User

I'm writing my own ODA using the BIRT ODA plugin extension point.

I looked at the ODA.flatfile and that explains alot however I'm
not sure I understand what should be in my dataTypeMapping entries

so say I have an XML file like
(this xml may be malformed, just made it up)

.....
<Books>
<Book name="happiness and grins" pages="200">
<SubInfo id="1">
<Info data="aaa"/>
<Info data="bbb"/>
<Info data="ccc"/>
</SubInfo>
</Book>
<Book name="smiles and more" pages="55">
<SubInfo id="1">
<Info data="ppp"/>
<Info data="qqq"/>
<Info data="rrr"/>
</SubInfo>

</Book>
<Book name="good laughter" pages="555">
<SubInfo id="1">
<Info data="zzz"/>
</SubInfo>
</Book>
</Books>

What should my dataTypeMappings look like?

Re: ODA Schema questions about dataTypeMapping [message #30984 is a reply to message #30526]

Mon, 25 April 2005 21:38

Eclipse User

Hi Mike,

The dataTypeMapping of the odaDriverRuntime extension point is for a
custom ODA runtime driver to define the supported mapping of its
driver-specific data types to one or more ODA data types. That is, a
custom ODA driver may implement ODA interface methods such as
IResultSetMetaData.getColumnType to return the "native" data type code
values of its underlying data source.
And based on your plugin dataTypeMapping definition in the plugin.xml,
the ODA consumer would then know which ODA data type(s) can be used to
convert the returned value, and calls the corresponding get<Type>
methods.

For more info, please use the Eclipse PDF Tools to see the reference
document of the extension point schema
(org.eclipse.birt.data.oda/schema/odaDriverRuntime.exsd ).

Linda

Mike Boyersmith wrote:

> I'm writing my own ODA using the BIRT ODA plugin extension point.
>
> I looked at the ODA.flatfile and that explains alot however I'm
> not sure I understand what should be in my dataTypeMapping entries
>
> so say I have an XML file like
> (this xml may be malformed, just made it up)
>
> ....
> <Books>
> <Book name="happiness and grins" pages="200">
> <SubInfo id="1">
> <Info data="aaa"/>
> <Info data="bbb"/>
> <Info data="ccc"/>
> </SubInfo>
> </Book>
> <Book name="smiles and more" pages="55">
> <SubInfo id="1">
> <Info data="ppp"/>
> <Info data="qqq"/>
> <Info data="rrr"/>
> </SubInfo>
>
> </Book>
> <Book name="good laughter" pages="555">
> <SubInfo id="1">
> <Info data="zzz"/>
> </SubInfo>
> </Book>
> </Books>
>
> What should my dataTypeMappings look like?

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